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    <title>Class SECSHeader
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            <article class="content wrap" id="_content" data-uid="com.CIMthetics.CSharpSECSTools.SECSCommUtils.SECSHeader">


  <h1 id="com_CIMthetics_CSharpSECSTools_SECSCommUtils_SECSHeader" data-uid="com.CIMthetics.CSharpSECSTools.SECSCommUtils.SECSHeader" class="text-break">Class SECSHeader
</h1>
  <div class="markdown level0 summary"><p>This is an <code>abstract</code> base class for a SECS message header.</p>
</div>
  <div class="markdown level0 conceptual"></div>
  <div class="inheritance">
    <h5>Inheritance</h5>
    <div class="level0"><span class="xref">System.Object</span></div>
    <div class="level1"><span class="xref">SECSHeader</span></div>
      <div class="level2"><a class="xref" href="com.CIMthetics.CSharpSECSTools.SECSCommUtils.HSMSHeader.html">HSMSHeader</a></div>
      <div class="level2"><a class="xref" href="com.CIMthetics.CSharpSECSTools.SECSCommUtils.SECSIHeader.html">SECSIHeader</a></div>
  </div>
  <h6><strong>Namespace</strong>: <a class="xref" href="com.CIMthetics.CSharpSECSTools.SECSCommUtils.html">com.CIMthetics.CSharpSECSTools.SECSCommUtils</a></h6>
  <h6><strong>Assembly</strong>: SECSCommUtils.dll</h6>
  <h5 id="com_CIMthetics_CSharpSECSTools_SECSCommUtils_SECSHeader_syntax">Syntax</h5>
  <div class="codewrapper">
    <pre><code class="lang-csharp hljs">public abstract class SECSHeader</code></pre>
  </div>
  <h3 id="properties">Properties
</h3>


  <a id="com_CIMthetics_CSharpSECSTools_SECSCommUtils_SECSHeader_SystemBytes_" data-uid="com.CIMthetics.CSharpSECSTools.SECSCommUtils.SECSHeader.SystemBytes*"></a>
  <h4 id="com_CIMthetics_CSharpSECSTools_SECSCommUtils_SECSHeader_SystemBytes" data-uid="com.CIMthetics.CSharpSECSTools.SECSCommUtils.SECSHeader.SystemBytes">SystemBytes</h4>
  <div class="markdown level1 summary"><p>System Bytes - The system bytes in the header of each message
for a given device ID must satisfy the following requirements.</p>
<p></p> 
Distinction - The system bytes of a primary message must be 
distinct from those of all currently open transactions 
initiated from the same end of the communications link.
<p></p>
They must also be distinct from those of the most recently 
completed transaction. They must also be distinct from any 
system bytes of blocks that were not successfully sent since 
the last successful block send.
<p></p> 
Reply Message - The system bytes of the reply message are 
required to be the same as the system bytes of the corresponding
primary message.
<p></p>
Multi-Block Messages - When using SECS-I as a transport layer the
system bytes of all blocks of a multi-block message must be the same.
</div>
  <div class="markdown level1 conceptual"></div>
  <h5 class="declaration">Declaration</h5>
  <div class="codewrapper">
    <pre><code class="lang-csharp hljs">public uint SystemBytes { get; set; }</code></pre>
  </div>
  <h5 class="propertyValue">Property Value</h5>
  <table class="table table-bordered table-striped table-condensed">
    <thead>
      <tr>
        <th>Type</th>
        <th>Description</th>
      </tr>
    </thead>
    <tbody>
      <tr>
        <td><span class="xref">System.UInt32</span></td>
        <td></td>
      </tr>
    </tbody>
  </table>
  <h3 id="methods">Methods
</h3>


  <a id="com_CIMthetics_CSharpSECSTools_SECSCommUtils_SECSHeader_EncodeForTransport_" data-uid="com.CIMthetics.CSharpSECSTools.SECSCommUtils.SECSHeader.EncodeForTransport*"></a>
  <h4 id="com_CIMthetics_CSharpSECSTools_SECSCommUtils_SECSHeader_EncodeForTransport" data-uid="com.CIMthetics.CSharpSECSTools.SECSCommUtils.SECSHeader.EncodeForTransport">EncodeForTransport()</h4>
  <div class="markdown level1 summary"><p>This method encodes the header (this object) into its &quot;transmission&quot; form.</p>
</div>
  <div class="markdown level1 conceptual"></div>
  <h5 class="declaration">Declaration</h5>
  <div class="codewrapper">
    <pre><code class="lang-csharp hljs">public abstract byte[] EncodeForTransport()</code></pre>
  </div>
  <h5 class="returns">Returns</h5>
  <table class="table table-bordered table-striped table-condensed">
    <thead>
      <tr>
        <th>Type</th>
        <th>Description</th>
      </tr>
    </thead>
    <tbody>
      <tr>
        <td><span class="xref">System.Byte</span>[]</td>
        <td><p>A <code>byte[]</code> that is this object's &quot;value&quot; in a transmittable form.</p>
</td>
      </tr>
    </tbody>
  </table>
</article>
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